
Pre-Test: Data Collection and Data Cleaning
Authored by Muhammad Fahrur Rozi Butar-Butar
Other
Professional Development
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10 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Apa tujuan utama dari Data Cleaning?
Menambah data baru.
Mengubah tipe data.
Melihat data mentah.
Memastikan data benar, konsisten, dan berguna, serta memperbaiki/menghapus data rusak.
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Mengapa Data Cleaning penting?
Agar dataset lebih besar.
Agar model sulit memahami data.
Untuk menjamin akurasi dan kelengkapan data.
Untuk hapus semua angka.
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Jika ada missing value di data numerik, bagaimana cara mengatasinya?
Hapus seluruh baris.
Ubah ke data kategorikal.
Isi dengan nilai acak.
Isi dengan mean, median, atau 0.
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Apa tujuan dari "Resolve Inconsistencies"?
Membuat format data baru.
Mengabaikan beda penulisan.
Menyeragamkan penulisan data yang sama (misal: "less sugar" vs "Less sugar").
Mengubah teks jadi angka.
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Mengapa data duplikat perlu dihapus?
Agar model lebih cepat.
Agar dataset lebih ringkas.
Karena bisa memberi info salah ke model, merusak kinerja.
Diperlukan untuk validasi model.
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Pustaka Python apa yang khusus untuk analisis data teks berdasarkan polanya?
NumPy.
Matplotlib.
RegEx.
Scikit-learn.
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Pustaka Python apa yang umum digunakan untuk membersihkan data dan memanipulasi dataframe?
SciPy.
Keras.
Pandas.
TensorFlow.
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